package com.neo.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @ClassName: PaymentService
 * @Title: cloud2021
 * @Package: com.neo.springcloud.service
 * @Description:
 * @Author: Kisen
 * @Date: 2021/8/16 23:32
 */
@Service
public class PaymentService {

    /**
     * 正常访问，肯定OK
     *
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_OK,id：" + id + "\t" + "O(∩_∩)O哈哈~";
    }

    /**
     * 超时访问，演示降级
     *
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimoutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_Timout(Integer id) {
        int seconds = 3;
        try {
            TimeUnit.SECONDS.sleep(seconds);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + " id：" + id + "\t" + "O(∩_∩)O哈哈~" + " 耗时(秒)：" + seconds;
    }

    public String paymentInfo_TimoutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " 8001系统繁忙或者运行报错，请稍后再试,id：" + id + "\t" + "/(ㄒoㄒ)/~~";
    }

    // =====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),  // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数超过了峰值，熔断器将会从关闭状态置为开启状态
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), // 时间范围
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60") // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号为：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能为负数，请稍后再试，/(ㄒoㄒ)/~~ id：" + id;
    }

}
